San Diego (/ˌsæn diˈeɪɡoʊ/ SAN dee-AY-goh, Spanish: [san ˈdjeɣo]; Spanish for 'Saint Didacus') is a city on the Pacific Ocean coast of Southern California located immediately adjacent to the Mexico–United States border. With a 2020 population of 1,386,932, it is the eighth most populous city in the United States and the seat of San Diego County, the fifth most populous county in the United States, with 3,338,330 estimated residents as of 2019. The city is known for its mild year-round climate, natural deep-water harbor, extensive beaches and parks, long association with the United States Navy, and recent emergence as a healthcare and biotechnology development center. San Diego is the second largest city in the state of California, after Los Angeles.
Tieling, a prefecture-level city under the jurisdiction of Liaoning Province, is located in the north of Liaoning Province and in the middle of Songliao Plain. The city has a total area of 13000 square kilometers and has jurisdiction over 2 municipal districts, 2 county-level cities and 3 counties, with a total population of 2.916 million in 2018. Since 1984, Tieling has sent nearly 600 sports reserve talents to excellent sports teams above the provincial level, including Yan Hong, Lu Gang, Chen Yueling, Sun fuming and Liu Hongyu, who have become world champions. In 2018, the gross domestic product (GDP) of Tieling City reached 61.66 billion yuan, the per capita GDP reached 23428 yuan, the general public budget income reached 5.22 billion yuan, and the per capita disposable income of urban permanent residents reached 24994 yuan, an increase of 7.5 percent over the previous year.